drm: rockchip: Provide ddc symlink in rk3066_hdmi sysfs directory

Use the ddc pointer provided by the generic connector.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/ <4cad24dde4508cec17483f983da08226ba7e48b0.1566845537.git.andrzej.p@collabora.com

drivers/gpu/drm/rockchip/rk3066_hdmi.c

@@ -564,9 +564,10 @@ rk3066_hdmi_register(struct drm_device *drm, struct rk3066_hdmi *hdmi)
 
 	drm_connector_helper_add(&hdmi->connector,
 				 &rk3066_hdmi_connector_helper_funcs);
-	drm_connector_init(drm, &hdmi->connector,
-			   &rk3066_hdmi_connector_funcs,
-			   DRM_MODE_CONNECTOR_HDMIA);
+	drm_connector_init_with_ddc(drm, &hdmi->connector,
+				    &rk3066_hdmi_connector_funcs,
+				    DRM_MODE_CONNECTOR_HDMIA,
+				    hdmi->ddc);
 
 	drm_connector_attach_encoder(&hdmi->connector, encoder);